Poor customer service

I had a large solar system installed last year April. Within 3 months the inverter gave problems. It was reported and it took more than 7 working days to have it repaired. Then a year later they had to do the annual inspection on the system and clean up the solar panels. They left without checking that everything was ok. As it was a Friday, the couldn't come out/ didn't want to come out. Called in a private electrician, found that their actions tripped the Eskom breaker outside my yard. My cost R3000. Two weeks ago they contacted me and informed me that my COC had to be re- issued as their guy's accreditation had lapsed/ wasn't valid. The worst is yet to come: I experienced issues with their app in that the app said the system is active but it doesn't receive any data. This was reported but one of the Gosolr employees refused to assist me because I used the word "sh*t" in my complaint!! I have now stopped the debit orders on my 2 properties.